<template>
  <div>
    <h2>Right</h2>
    <p>{{age}}</p>
    <button @click="age++"></button>
  </div>
</template>

<script>
export default {
data(){
  return {
    age:20
  }
}
}
</script>

<style scoped>
  div {
    height: 200px;
    background-color: pink;
  }
</style>